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公开(公告)号：DE69231585T2
公开(公告)日：2001-05-31
申请号：DE69231585
申请日：1992-05-08
Applicant: BIO RAD LABORATORIES
Inventor： CURBELO RAUL , JOHNSON B
Abstract: A fast and effective way to step a relative position quantity by a reference interval. Each step in relative position includes open-loop and closed-loop control intervals. An actuator (27) capable of changing the relative position and a closed loop servo (17) that acts on the actuator (27) to keep the relative position centered on the nearest of a series of reference values. The servo (17) has locked the relative position to a particular initial reference value. First, the actuator (27) is caused to change the relative position by an amount approximately equal to the reference interval in a manner that the servo (17) cannot track the change, such as by disabling the servo (17). Servo control is then re-established, at which point the servo (17) operates to keep the relative position centered on the nearest reference value.
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公开(公告)号：DE69231585D1
公开(公告)日：2001-01-04
申请号：DE69231585
申请日：1992-05-08
Applicant: BIO RAD LABORATORIES
Inventor： CURBELO RAUL , JOHNSON B
Abstract: A fast and effective way to step a relative position quantity by a reference interval. Each step in relative position includes open-loop and closed-loop control intervals. An actuator (27) capable of changing the relative position and a closed loop servo (17) that acts on the actuator (27) to keep the relative position centered on the nearest of a series of reference values. The servo (17) has locked the relative position to a particular initial reference value. First, the actuator (27) is caused to change the relative position by an amount approximately equal to the reference interval in a manner that the servo (17) cannot track the change, such as by disabling the servo (17). Servo control is then re-established, at which point the servo (17) operates to keep the relative position centered on the nearest reference value.
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